"He just had a really blank stare on his face," says Lauren Garcia, who lived in his dorm. "[He] was listening to his iPod and had a blank stare."
Clementi then drove to the George Washington Bridge and jumped into the Hudson River. The tragedy of his suicide, at 18, has affected people around the world because of what preceded it: Just three days earlier, his freshman roommate at New Jersey's Rutgers University, Dharun Ravi, 18, allegedly streamed Clementi's romantic encounter with a man in their dorm room on his Web cam.
Was Clementi bullied to death?
In January, a 15-year-old high school freshman named Phoebe Prince also committed suicide after months of taunting at school. "I truly believe Phoebe did not want to die and just snapped and had nowhere to turn," says Phoebe's aunt Eileen Moore in an exclusive interview as PEOPLE explores what's happening in her hometown, Hadley, Mass., in the aftermath of her death.
Says Moore: "The signs were there and there was no support."
For much more about Tyler and Phoebe's stories, confessions of a bully and to hear from everyday kids, pick up PEOPLE's new issue, on newsstands Friday.
For more on bullying, see the new issue of PEOPLE on newsstands Friday, and our special week-long series with Anderson Cooper 360, airing on CNN nightly starting Oct. 4, along with a special PEOPLE-CNN-Cartoon Network Town Hall on Fri. Oct. 8 at 10 p.m.